On the ProDevTips.com website, there's a new tutorial (part one of a series) that walks the developer through the integration of the Zend Framework, some Ajax functionality and Smarty to create a feed reader.
In this series I will walk you through the code of a site that uses only Ajax and Scriptaculous to handle it's completely windowed interface. Making an interface like this is not really good design, it's only done here for the sake of teaching. It is kinda cool though. Especially if you have a big screen.
The source code is available for download and having it makes the installation and setup of the system much simpler. With it, you're only about fifteen steps away from getting the application up and running.